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Aug 16-17, 2025: Severe Weather and Flash Flooding

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Thunderstorm in Vicinity

72°F

22°C

Humidity	100%
Wind Speed	S 5 mph
Barometer	29.98 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	19 Aug 2:30 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles SSE Lemont IL

Flood Watch August 19, 02:45am until August 19, 04:00am

Flood Advisory August 19, 02:45am until August 19, 10:30am

Click here for hazard details and duration

Flood Watch

Flood Advisory

Flood Watch August 19, 02:45am until August 19, 04:00am
Flood Advisory August 19, 02:45am until August 19, 10:30am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 72 °F
Chance
T-storms
Tuesday
High: 86 °F
Chance
T-storms
Tuesday Night
Low: 69 °F
Mostly Cloudy
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 66 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 63 °F
Mostly Clear
Friday
High: 84 °F
Sunny

Detailed Forecast

Overnight

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind around 5 mph.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, with a high near 86. West wind 5 to 10 mph becoming north in the afternoon.

Tuesday Night

Mostly cloudy, with a low around 69. North wind 5 to 10 mph.

Wednesday

Mostly sunny, with a high near 80. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 66. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

Thursday

Sunny, with a high near 82.

Thursday Night

Mostly clear, with a low around 63.

Friday

Sunny, with a high near 84.